A 90-car train carrying crude oil derailed and exploded in a rural area of western Alabama early on Friday, leaving 11 cars burning and potentially bolstering the push for tougher regulation of a boom in moving oil by rail.

No injuries have been reported, but 20 of the train’s cars derailed and 11 were still on fire, the train owner, Genesee & Wyoming, said in a statement. Those cars, which threw flames 300 feet into the night sky, are being left to burn down, which could take up to 24 hours.